Effect of controlled-release urea on heavy metal mobility in a multimetal-contaminated soil

Xu, Chao; Xiang, Qian; Zhu, Qihong; Zhu, Huiling; Huang, Daoyou; Yang-zhu, Zhang

doi:10.1016/s1002-0160(17)60467-3

Cited by 4 publications

(2 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Total Cd and Zn content was digested by treatment with HCl-HNO 3 -HClO 4 (Chao et al, 2017). Heavy metal fractionation was determined using the BCR three-step sequential extraction procedure described by Li et al (2020).…”

Section: Soil Heavy Metal Content Fractionation and Diethylenetriamin...mentioning

confidence: 99%

Biochar Alleviates Phytotoxicity by Minimizing Bioavailability and Oxidative Stress in Foxtail Millet (Setaria italica L.) Cultivated in Cd- and Zn-Contaminated Soil

Kang

Geng

et al. 2022

Front. Plant Sci.

View full text Add to dashboard Cite

Soil contamination with multiple heavy metals is a global environmental issue that poses a serious threat to public health and ecological safety. Biochar passivation is an efficient and economical technology to prevent heavy metal contamination of Cd; however, its effects on compound-contaminated and weakly alkaline soil remain unclear. Further, the mechanisms mediating the immobilization effects of biochar have not been evaluated. In this study, three biochar treated at different pyrolytic temperatures [300°C (BC300), 400°C (BC400), and 500°C (BC500)] were applied to Cd-/Zn-contaminated soils, and their effects on plant growth, photosynthetic characteristics, Cd/Zn accumulation and distribution in foxtail millet were evaluated. Further, the effect of biochar application on the soil physicochemical characteristics, as well as the diversity and composition of the soil microbiota were investigated. Biochar significantly alleviated the phytotoxicity of Cd and Zn. DTPA (diethylenetriamine pentaacetic acid)-Cd and DTPA-Zn content was significantly reduced following biochar treatment via the transformation of exchangeable components to stable forms. BC500 had a lower DTPA-Cd content than BC300 and BC400 by 42.87% and 39.29%, respectively. The BC500 passivation ratio of Cd was significantly higher than that of Zn. Biochar application also promoted the growth of foxtail millet, alleviated oxidative stress, and reduced heavy metal bioaccumulation in shoots, and transport of Cd from the roots to the shoots in the foxtail millet. The plant height, stem diameter, biomass, and photosynthetic rates of the foxtail millet were the highest in BC500, whereas the Cd and Zn content in each organ and malondialdehyde and hydrogen peroxide content in the leaves were the lowest. Moreover, biochar application significantly increased the abundance of soil bacteria and fungi, as well as increasing the fungal species richness compared to no-biochar treatment. Overall, biochar was an effective agent for the remediation of heavy metal-contaminated soil. The passivation effect of biochar exerted on heavy metals in soil was affected by the biochar pyrolysis temperature, with BC500 showing the best passivation effect.

show abstract

Section: Soil Heavy Metal Content Fractionation and Diethylenetriamin...mentioning

confidence: 99%

Biochar Alleviates Phytotoxicity by Minimizing Bioavailability and Oxidative Stress in Foxtail Millet (Setaria italica L.) Cultivated in Cd- and Zn-Contaminated Soil

Kang

Geng

et al. 2022

Front. Plant Sci.

View full text Add to dashboard Cite

show abstract

“…The increasing of minerals showed in Table 3 according to type of fertilizers can be due bioavailability of heavy metals when soil pH decrease due urea application. Urea can acidify the soil resulting in the transformation of heavy metals and increasing their availability [13].…”

Section: Discussionmentioning

confidence: 99%

Assessment of Agricultural Practices in Maize Crops (Zea mays) Based on Elemental Profile and Chemometrics Analysis

Heredia

Moldes

Savio

et al. 2019

AJRCS

View full text Add to dashboard Cite

In this work the effects produced by two treatments on maize crop samples have been studied. Analysis of maize grain based on two types of agronomical conditions was performed on: (a) lots treated with different fertilizers and (b) lots with different crop density. Analysis was carried out by microwave induced plasma with optical emission spectrometry (MIP OES) and included the quantification of 11 elements: Ca, Cd, Cr, Cu, Fe, Mg, Mn, Ni, P, Pb and Zn. With the purpose of understand the effect of agricultural practices on elemental profile, principal components analysis (PCA) and cluster analysis (CA) were used as chemometrics tools, finding a correct grouping of each crop based on the type of treatment. The obtained models can be useful to evaluate agricultural strategies, as well as for determining potential yields in maize crops.

show abstract

Nitrogen application practices to reduce cadmium concentration in rice (Oryza sativa L.) grains

Zhou

Wang

et al. 2022

Environ Sci Pollut Res

View full text Add to dashboard Cite

Effect of controlled-release urea on heavy metal mobility in a multimetal-contaminated soil

Cited by 4 publications

References 26 publications

Biochar Alleviates Phytotoxicity by Minimizing Bioavailability and Oxidative Stress in Foxtail Millet (Setaria italica L.) Cultivated in Cd- and Zn-Contaminated Soil

Biochar Alleviates Phytotoxicity by Minimizing Bioavailability and Oxidative Stress in Foxtail Millet (Setaria italica L.) Cultivated in Cd- and Zn-Contaminated Soil

Assessment of Agricultural Practices in Maize Crops (Zea mays) Based on Elemental Profile and Chemometrics Analysis

Nitrogen application practices to reduce cadmium concentration in rice (Oryza sativa L.) grains

Contact Info

Product

Resources

About